redux-thunk官网戳这里

$ npm install redux-thunk

use applyMiddleware() :

//
import { createStore, applyMiddleware } from 'redux';
import thunk from 'redux-thunk';
import rootReducer from './reducers/index';

const store = createStore(rootReducer, applyMiddleware(thunk));

同时使用redux-devtools

import { createStore, applyMiddleware, compose } from 'redux'
import thunk from 'redux-thunk'
import reducer from './reducer'
const composeEnhancers = window.__REDUX_DEVTOOLS_EXTENSION_COMPOSE__
  ? window.__REDUX_DEVTOOLS_EXTENSION_COMPOSE__({})
  : compose

const enhancer = composeEnhancers(applyMiddleware(thunk))

const store = createStore(reducer, enhancer)

export default store